Dorsal vein on top of penis bulging, constant pain. Why are there bumps and black spots? Caused by masturbating?

the dorsal vein on the top of my penis is now bulging and looks clogged. I feel constant slight pain every 5 min coming from the vein (feels like indigestion except in the penis vein). I might have caused this injury by masterbating extensively the day before. also, I have noticed random bumps under the skin and dark black spots at the end of some veins.